Intake-manifold



T. ULMER.

INTAKE MANIFOLD.

APPLICATION FILED APR. 9.1919.

1,333, 142.- Patented Mar. 9,1920.

THEODORE ULMER, OF SCOTLAND, SOUTH DAKOTA.

INTAKE-MANIFOLD.

Specification of Letters Patent.

Patented Mar. 9, 1920.

Application filed April 9, 1919. Serial No. 288,768.-

To all whom it may concern:

Be it known that I, THEODORE ULMER, a.

citizen of the United States, residing at Scotland, in the county ofBonhomme and State of South Dakota, have invented a new and'usefulIntake-Manifold, of which the following is a specification. Thisinvention relates to improvements 1n tion engines, the object of theinvention being to provide an improved manifold Whereby an' equaldistribution of the gas from the carbureter will be made to all of thecylinders.

A further object of the invention is to provide an improvedmanifoldwhich will result in a considerable saving of gas, and which iscomparatively simple in construction,-eco-nomical to manufacture andveryefficient in use.

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention consists in the novel featuresofconstruction and combination of parts which will be, more fullydescribed hereinafter and particularly pointed out in the claims.

In the drawings accompanying and forming part of this specification,

Figure l is a side view in dot and dash lines of a conventional form ofgas engine, showing the intake manifold connected with the carbureterand the cylinder'housing; Fig. 2 is a diagrammatic View illustrating themanner in which gas is delivered to the cylinders by means of myimproved manifold, the manifold being shown broken away and partly insection;

Fig. 3 is a view of the delivery end of the manifold, showing myimproved battle in position therein; and I i Fig. 4 is a perspectiveview of the baffle.

The same characters of reference designate the same parts in thedifferent figures of the drawings.

In,the practical operation of automobiles considerable difiirulty isexperienced by rea- 'son of the corrosion of the spark plugs, es--pecially in} the front cylinder. After extended study and experiment,'Ihave found that the principal. cause of this trouble 1s the fact that inorder to give all of the cylinders sufiicient gas the frontcylinder-gets an excessof fraw gas which cannot be enlntake manifoldsfor intern-a1 combustirely consumed, this excess of gas remaining, inthe cylinder and carbonizing the spark plug. The cause of this excess ofgas going into the front cylinder is the fact that the manifold asusually provided has a Y-tube, each branch of which supplies gas to tWocylinders, and since the front cylinder is located more directly in theline of travel of the gas it naturally follows that more gas will enterthe front cylinder than the rear. The object of this I inventiontherefore, is to overcome this difliculty, and

tests with automobiles of different makes have fully demonstrated thatwith the use of .the device hereinafter described, not only is thistrouble entirely eliminated, but that a considerable saving in gas isthereby effected.

In the embodiment herein illustrated, my improved intake manifoldcomprises the usual Y-tube having a stem 2 adapted to be connected tothe carbureter for leading the explosive mixture therefrom to theexplosion chambers of the cylinders, the branches 3 each leading to apair of cylinders, and where there are more than four cylinders eachbranch 3 is itself provided with an additional branch or branches forsupplying the additional cylinders. At the end of each of the branches3, Where it connects with the cylinder housing, an elbow 4 is interposedbetween the tube and the housing, which elbow is preferably solid castand is of somewhat larger diameter than the remainder of the tube orpipe. Within each of away from the front cylinder and toward the centerof the elbow, whereby the gas is caused to flow freely toward the secondcylinder and is thus equally distributed in all of the cylinders.

While I have described in detail the structur" herein illustrated, it isto be understood that I do not thereby limit my invention to the precisefeatures of construction shown, as I am aware that many mechanicalchanges may be madetherein without departing from the spirit and scopeof the invention as set forth in the appended claims.

Having thus described my invention, what I claim is:

1. A device of the class described, comprising a tube adapted for thepassage of an explosive mixture, and a curved plate secured Within saidtube at the delivery end thereof and extending longitudinally of thetube for deflecting the said mixture toward the axial center of saidtube.

2. A device of the class described, com= prising a tube adapted for thepassage of an explosive mixture, an elbow secured to said tube, and acurved baffle plate secured within said elbow and extendinglongitudinally thereof and adapted to deflect the mixture toward theaxial center of the elbow.

3. A device of the class described, comprising a tube adapted for thepassage of an explosive mixture, an elbow secured to said tube, and atriangular baflle plate secured along one side thereof within said tubeand having the "ertex opposite said side curved toward the axial centerof said elbow. I

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

THEODORE ULMER.

Witnesses:

G. F. WILD, JOHN PIKAS.

